中国物理学会高能物理分会第十一届全国会员代表大会暨学术年会

Using 980 fb-1 of data on and around the Υ(nS)(n=1,2,3,4,5) resonances collected with the Belle detector at KEKB, the two-photon process γγ-> γψ(2S) is studied from √s = 3.7 GeV to 4.2 GeV for the first time. Two structures with resonance parameters being measured are seen in the invariant mass distribution of γψ(2S). And the cross section of e+e- ->ηϕ via initial-state radiation are measured from threshold to 3.95 GeV. The resonant parameters of ϕ(1680) and the branching fraction of ϕ(1680)→ηϕ are also measured in this work.